Airfoil-Turbulence Interaction Noise Source Identification and Reduction by Leading-Edge Serrations

G. Bampanis, M. Roger, Daniele Ragni, Francesco Avallone, Christopher Teruna

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

22 Citations (Scopus)
129 Downloads (Pure)


The present work is aimed at assessing leading-edge serrations as an airfoil turbulenceimpingement noise (TIN) reduction mean. It relies on extended anechoic wind-tunnel testing including far-field measurements over an observation sphere to infer the three-dimensional features of TIN, and on microphone-array measurements to extract leading-edge noise in frequency. In particular this allows measuring unambiguously reductions of up to 15 dB achieved by serrations on flat plates. A preliminary study of the three-dimensional flow field around the leading edge using time-resolved tomographic particle image velocimetry (PIV) is detailed.
Original languageEnglish
Title of host publication25th AIAA/CEAS Aeroacoustics Conference
Subtitle of host publication20-23 May 2019 Delft, The Netherlands
PublisherAmerican Institute of Aeronautics and Astronautics Inc. (AIAA)
Number of pages18
ISBN (Electronic)978-1-62410-588-3
Publication statusPublished - 2019
Event25th AIAA/CEAS Aeroacoustics Conference - Delft, Netherlands
Duration: 20 May 201923 May 2019
Conference number: 25


Conference25th AIAA/CEAS Aeroacoustics Conference
Internet address

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.


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